Cache-Control header value.
Content-Disposition header value.
Content-Encoding header value, e.g. "gzip".
Object size in bytes.
MIME type, e.g. "application/octet-stream".
HTTP ETag string (including surrounding quotes from S3).
Expires header as Unix epoch (seconds), if present.
Unix epoch (seconds) of last modification.
User-defined metadata keys (stripped of x-amz-meta- prefix).
SSE algorithm, e.g. "aws:kms" or "AES256".
KMS key ID when SSE-KMS is active.
S3 storage class, e.g. "STANDARD", "GLACIER".
Version ID when bucket versioning is enabled.
All properties returned by HeadObject for a single S3 object.
User-defined metadata (
x-amz-meta-*) is surfaced inmetadatawith keys stripped of the prefix.